Water-gage.



G. J. HATZ. WATER GAGE. APPLICATION FILED APR. 9, 1913.

Patented sept.9,1913.

2 SHEETS-SHEET 1.

CDLUMBIA PLANDGRAPH co..w'Asl-IIMII'ONy D. c.

G. J. HATz. WATER GAGE.

APPLICATION FILED APB.. 9, 1913.

Patented sept.9,1913.

2 SHEETS-SHEET 2.

am /T e, W @am f zo sAiEsfP-[ATEN y l GEORGE lfHAiz, OE OMAHA, NEBRASKA,AssIGNoR or* ONE-HALE To CHARLES E. 'Y FULLER, OE OMAHA, NEBRASKA.

V Water-Gages, of which I' do declare the following tobe a full, clear,and exact .description,r reference being'fhad to the accom'- ngdrawings, fO-rining part of lthis- Pmy specication. Y .n f. Mypresentinvention has relation to that class of water gagesfinore especiallyadapted fordeterminii'ig'` the height of water within steam boilers,,and the .object yof the `invention is to 'provide a simple, strong,

light and effective construction of water j gage and one inwhichalldangerof leakage will be avoided.

An example ofthe type of watergage to which my invention relates issetforth 1n Letters Patent No.V 1,051,105, granted to myself and CharlesE., Fuller, as,v assignee, The present invention. Y consists of thefeatures of novelty hereinafter described, illustrated intheaccompanying drawings and particularly pointed out in the claims `at theend of this specification.

Figure 1 is la front view'of al water gage .embodying my invention. Fig., Zisla view partly yin central vertical section on line 2-2 of Fig.1 and partly in elevation. Fig.

3 is a view in Ycross section on line 3-3 of Y 35 showing my inventionapplied `to a duplex Fig. 1. Fig. 4 is a view in frontelevat-ion watergage. Fig. 5 is a view in cross section on line 5-5 of F ig. 4.

. The casing 1 Vof my improved water gage is preferablya castingprovided with a channell 2v for .the column ofy water." As

Y shown, the Vstopand bottom of the channel i54 i Y 4by a central,longitudinal ribi'and trans- 2 are threaded to receive-the couplingpipes f 4 and I have shown the back portion of the casing 1 as recessedandpstrengthened verse ribs 7, as by this means lightnessand greatstrength are givento the casing. The casing vlis formed with a chamberadapted to receive the sight glass 11.y The inner port-ionof the chamber10 is provided vwith a ledge or shoulder 12 ,be-tween' which and f thesight glass 11 isinterposeda gasket 18.

The sight glass 11 is shown of such :di-

vmension astoapproximately fill the .chamo `the surrounding wall 16 ofthe casing.v

o Y Speccatonof Letters 'atent.V Patentedspf.9,1913. AppiieationiiieaAprna, 1913.Y Yseria-1 No. 760,069. Y

ber 10, and this sightl glass is vpreferably, of

T-shape; that isto say, the sight glass is provided with an outwardlyprojecting-porrvti'onvv14 that extends centrally beyond the sideportions of the glass; ThisT-shaped vconstructionof sight glass isattended with f various advantages whih will hereinafter in ore fullyappear. The casing 1 is vformed with' an outwardly projecting wall 16thaty surrounds the chamber 10 of the casing and is offset therefrom,and'this wall 16 forms,- with the projecting portionv 14 of the sightglass, when Vthe latter is in position, a s tulfing boxadapted toreceive suitable packing 17.

In my improved construction, thecover.

20 is connected to the casing 1 bys'uitable bolts 21 that enter threadedseats `formed inthe wall of thecasing. rlhe'cover QOis provided with asight opening and with an inwardly projecting gland 22 adapted to enterthe stifng box or space between'the projecting portion 14 of thesightglass and In assembling the parts, thesight glass sa f Y llwill beplaced within the chamber 10of the casing 1, with the .gasketlinter'posed f between the inner face of theasight glass and t-heshoulder 12 oflthecasing, after which the packing 17 will be placedVwithin round-ing wall 16 of the-` casing and the raised portion 14 ofthe sight glass, and this packing will extend across they abuttingwallsofthe chamber 10 and sight glass 11.

i the stuiiing box. formed between' the sureorr The cover 20will then be'seti in position and, by tightening` the screws 21, thegland` f.

22 `of the cover Vwill tightly compress the" packing 17 within thestuffingv box.' yBy tightening theyscrews 21, the pressure of the gland22`fwill cause'ithe soft packing material 17l to be forced laterally*against* .jthefsurrou'ndiiig.wallf16 and the y edge of. the projectingVport-ion 14 ofthe sightvglass 11. It will thus be seen that 'anexceedingly,` tight joint is formed between` the 'sight glass r and thecasing so that all-danger of leakage around the edgesof the sight glassis avoided.v In fact, when the packing 17 is coinpressed, vasaboveindicated, the escape of the fluid from the* ycasing iseffectively` guarded against at three points, viz: at the inner gasket13 that is firmly compressed ioo between the sight glass and the casing;

again,4 by the packing extending across the iio abutting .walls of thechamber and of the" sight glass, and, again,bythecompression of thepacking 17 against the'surroundingl wall 16 of the casing andtheoutwardly projecting portion 14 of the sight glass.

It will be observed that the outwardly projecting portion 14 of thesight glass is somewhat .smaller thanthe sight opening vof the cover 20,so that when the parts are ,in

but alldrippings will follow the inner edge i Aofthe gland and,hence,the danger of smearing the face of the sight glass is avoided. Thepacking 17 `is of such flexible or elasticl material that, when it iscompressed,iit efkfectivelyiills every adjacent crevice and the glandy22 most edectively serves to prevent any danger of the packing blowingout, and, indeed, the greater the pressure upon the gage glass, the morefirmly will the packing;

1-7 beforced laterally against the lsurround- ',ingwall 16 of theVcasing and against the edge of the projectingportion kof `the sightvglass.

In order to V'enable the cover 20 to beread- :ily removed without dangerof breaking theY sightuglass, I provide the-cover withoneor :morethreaded openings 30 that are arranged opposite the wall of the casing1,so that when it is desired to remove the cover itis Y only necessarytoVV withdraw the bolts 21 and then, by inserting one of these boltsinto the Vsupplemental threaded openings 30, the cover 2O may beforcedaway from the casing.

This is a desirable feature since, after the 111g achamber to receive asight Iglass 'and covers of sight glasses have been in use forsometime,V they vare apt to stick and, if a hammer or like instrument isused in looseningthe covers, there is danger of injuring the sightglass.

In Figs. 4 and 5 of kthe drawings, my invention is shown as applied to aduplex water gage-that is to say, a gage in which the height of a columnof water may be ob- VVserved from opposite sides ofthe gage: In thisform of my invention, the Vcasing 1` has a central, inwardly projectingwall '1"y extending around the interior ofthe casing, As shown, thecentral space within the lwall 1b is connected by channels formed in theoii'set portions 41 and 42 with the `couplings, 4 and 5. In this form ofthe invention, two sight glasses 11 are used,each`of these sight glassesbeing of T-shaped construction-that is to say, having an voutwardlyprojecting portion 14, as before described. Between each of the sightglasses 11 and the interior wall 1b of the casing is interposeda gasket13 and, around each of the chamberslO in which the sight glasses 11 arecontained, the

ycasing is vformed with va projecting wall 16 offset fromfthe chamber10. In this form of the invention,`as in that hereinbefore described,each offset-wall 16 forms, with the projecting portion 14 of thecorresponding sightglaSS, a stuffing box in which is placed suitablesoft or flexible packing 17 that is compressed Vby the gland 22 of thecorresponding cover 20.

twill be understood that each of the covers 20 is held invplace byscrewbolts 21, as

hereinbefore described,'and each of the coversjisfprovided with asupplemental threaded opening 30 to enablethe covers to bereadilyremoved, as hereinbefore set forth.`

What has been said with respecttothe advantages of my invention asapplied 'to the sight glass shownupon Sheet lof the Y drawings, isapplicable also to theV yduplex sight glass illustrated upon Sheet 2.

I wish'it'to be understood that the details of construction above setout may be varied without departing frointhescope ofthe in- Y vention,andthat features ofthe invention may be-"employed without its use 'asanfentirety..

Having thus described myinvention,`what I claim as new, and desire tosecure by Letters Patent, is f j I Y l. A water gage comprising-acasingl having a chamber to Vreceive a sight glass and having anoutwardly projecting wall oifset from and s urrounding said chamber, asight glass withinjsaid chamber having an outwardly projecting portionforming with said vsurrounding wall a stuiing box, a cover having aglandextendingwithin said stuiiing box and suitable packing within saidstuft'- ingbox.; f

"2. FA' water gagecomprising af'casing havhavinganoutwardly projectingwall offset ,from andsurrounding said chamber, a sight glass within saidchamber having an out-V wardly Vprojecting ,portion forming withV saidsurrounding wall a stulngbox, a cover having a gland extending withinsaid st ut'- ing box and suitable packing within Y said stufng box, saidgland and packing extend- -ing across the abuttingrwalls of the chamberV'and sight glass. s y Y 3'.. A waterk gage comprlsing a casing4havingf'asight glass chamber provided with Shoulder extending-around thewater space land vhaving an outwardly kprojecting wall voffset from andsurrounding said chamber, a

sight glass within' said chamber Ahaving an outwardly projecting portion'forming With said surroundingwall a'stufng box, a gasket `arrangedbetween the sight glass and said shoulder, a cover havinga glandkextending within said stuiiing box andsuitable packing within saidstuf'tng'box.

4. VA water gage comprising a casing *havioA ing a chamber to receive asight glass and having an .outwardlyV projecting walloffset from andsurrounding said chamber, a sight glass within-said chamber having an.out-f wardly projecting portion forming with'said surrounding wall avstuiing box and having side walls at substantially right angles to theplane of saidglass, the outer face of the side portions of said glassesbeing substantially parallel with the mouth of said chamber, a coverhaving a gland extending within said stuiiing box and suitable packingwithin said stuiing box and extending across the abutting walls of thechamber and sight *Y glass.

5. A water gage comprising a casing having a chamber to receive a sightglass and having an outwardly projecting wall o iiset from andlsurrounding said chamber, a sight glass substantially `filling saidchamber and having an outwardly projecting portion `forming with saidsurrounding wall a stua cover having an yopening larger l GEORGE vJ.HATZ;y

Witnesses:

CORNELIUS J. CAREY, JAMES T. BARRETT.

Copies of this patent may be obtained for ive cents each, by addressingthe Commissioner of Patents,

Washington, D. G.

